What are the responsibilities and job description for the Rengo AI - AI Engineer position at deCircle?
Rengo AI is building the intelligence layer for fund management — starting with next-generation portfolio monitoring systems for investment teams.
Today, portfolio monitoring is fragmented across dashboards, spreadsheets, internal tools, and manual analyst workflows. Rengo replaces this with an AI-native monitoring layer that continuously interprets portfolio activity, risk, exposure, and performance across assets and strategies.
The Role
As a Founding AI Engineer, you will build the core system that powers AI-driven portfolio monitoring for institutional investors.
You will design systems that continuously:
ingest portfolio market position-level data
detect meaningful changes and anomalies
generate structured investment insights
explain performance and risk drivers in natural language structured outputs
This is a high-reliability AI system, not a chatbot.
What You’ll Build
1. AI Portfolio Monitoring Engine
Real-time and batch systems that monitor:
portfolio performance (PnL, attribution, drawdowns)
exposure shifts (sector, geography, asset class)
risk signals (volatility, correlation, concentration)
position-level changes
AI layer that converts raw portfolio data into:
alerts
summaries
explanations
actionable insights
2. Change Detection & Intelligence Layer
Build systems that detect:
significant portfolio movements
abnormal price/volume behavior in holdings
drift from target allocations
risk regime changes
Prioritization layer: what matters vs noise
3. AI-Generated Portfolio Narratives
Generate structured outputs such as:
daily / weekly portfolio reports
performance explanations (“why did we lose/gain?”)
exposure breakdowns
risk commentary
Ensure outputs are:
auditable
grounded in data
consistent across runs
4. Data Retrieval Systems for Funds
Integrate:
positions & holdings data
market data feeds
internal fund metadata
external news & filings (optional enrichment layer)
Build RAG pipelines over portfolio market context
5. LLM Systems for Financial Reliability
Design LLM pipelines that:
avoid hallucinated financial reasoning
produce structured, verifiable outputs
ground insights in actual portfolio data
Build evaluation frameworks for correctness of financial narratives
Strong engineering background
3–7 years in backend, data engineering, or ML systems
Strong Python (mandatory)
Experience building production data systems or analytics platforms
LLM / AI systems experience
Experience building LLM applications in production
Strong understanding of:
RAG systems
structured generation (schemas, JSON outputs)
tool use / function calling
agent workflows
Awareness of failure modes in LLM reasoning (critical in finance)
Data-heavy systems mindset
Experience with:
time-series data
event-driven pipelines
analytics / observability systems
Comfort working with imperfect, high-volume financial data
Nice to Have
Experience in:
asset management / hedge funds / fintech
portfolio analytics or risk systems
trading / market data infrastructure
Familiarity with:
exposure/risk models
PnL attribution systems
BI / analytics platforms for finance
Experience with vector databases or hybrid retrieval systems
What Makes This Role Unique
You are building the core monitoring brain of a fund
Not dashboards — interpretation intelligence
Systems you build directly influence investment decisions and risk awareness
High emphasis on:
correctness
traceability
reliability under uncertainty
You own the full stack: data → intelligence → insight delivery
Tech Direction
Python (core systems AI orchestration)
LLM APIs (OpenAI / Anthropic / open-source models)
Postgres time-series storage
Vector DB for semantic retrieval
Stream/batch processing pipelines
Cloud infrastructure (AWS/GCP)
Why Join
Define how AI monitors institutional portfolios
Replace manual analyst workflows with automated intelligence systems
Work on one of the hardest AI problems in finance: turning data into trustworthy interpretation
High ownership, early-stage, no legacy constraints